Add database connection close statement in asset retrieval error handling

Author: ajhai

llmstack/assets/apis.py

@@ -1,5 +1,6 @@
 import logging
 
+from django import db
 from rest_framework import viewsets
 from rest_framework.permissions import AllowAny, IsAuthenticated
 from rest_framework.response import Response as DRFResponse
@@ -75,4 +76,5 @@ def get_asset_data(self, objref, request_user, request_session=None, include_dat
             return response
         except Exception as e:
             logger.error(f"Error retrieving asset: {e}")
+            db.connections.close_all()
             return None